Who each tool is best for, what it costs, and where each one has the edge. Competitor details are checked against their own pages and dated.
If you want a different summary app, compare summary apps instead. If you want to learn one whole book, Study Junkie is the alternative: it keeps the full text, splits it into chapters and adds problems and opt-in recall. Pick Blinkist to get the gist of many popular non-fiction books in 15 minutes each. Pick Study Junkie once you have chosen the book you want to understand.
Read comparisonPick ChatGPT Study Mode if you want free, flexible tutoring on one passage or idea, with context from outside the book. Pick Study Junkie if you want to get through a whole book: it turns your upload into chapters, sets problems from the text with feedback on your solutions, and can schedule recall of what you finished, without a monthly bill. Plenty of readers will use both, ChatGPT around the book and Study Junkie for the book itself.
Read comparisonNotebookLM, renamed Gemini Notebook by Google on 2026-07-16, is the better pick for research across many sources: it is free, it cites the exact passage behind each answer, and it has native phone apps. Study Junkie is the better pick when you have one long book you want to learn chapter by chapter, with problems generated from the text, feedback on your solutions and an optional review schedule, paid for once instead of by subscription. Plenty of people will want both.
Read comparisonThis comparison is for people who use Readwise to remember books, not as a read-it-later app or RSS reader. Pick Readwise if you highlight a lot across many books and articles and want those highlights synced from Kindle or Apple Books and resurfaced for years. Pick Study Junkie if you have one book you want to understand and use, especially dense non-fiction or a textbook where your highlights don't capture the argument. Many readers will want both.
Read comparison